so here's a weird one..

as you guys know, when you turn recirc on (close the outside vent) while the fans are on, you can hear/feel an increase in air pushing into the cabin.

well, while driving, when i close the vent, i can hear the increase of air as usual, then it dies down, then increases again, then dies down again, and repeat indefinitely...

so it sounds like my vent keeps opening and closing itself.

has anyone experienced this before? am i looking at a bad vent door motor or what?

help!

 

i would start with any sort of ground, does it do it as a rythem or just at total random??

 

it appears to be random. also, when the car is at a stop -- engine running or not -- the vent stays closed. it's as if once there's any kind of pressure pushing against the door from the outside, the vent door gives out and opens up.

 

^^^

i can't be the only one who has experienced this..

 

morning bump..